What is Stencil ?
Stencil is (noun) 1. a sheet of card- board or metal with a pattern cut out of it, so that if it is placed on a surface and colour is passed over it, the pattern will appear on the surface He used a stencil with electrical components on it to illustrate his project. 2. a design which is painted in this way The bathroom is decorated with stencils of fish and shellfish.(verb) to mark with a stencil His name was stencilled on each piece of lug- gage. (NOTE: stencilling – stencilled. The US spelling is stenciling – stenciled.)
source: Easier English, Student Dictionary Upper Intermediate Level